1. Bluetooth version: 5.4 chip: JL 7003D42. Battery capacity: 400mAh in the charging case, 35mAh for headphones3. Music time: 8 hours talk time: 5 hours4. Material: ABS+PC5. Waterproof rating: IPX41. -35dB deep active noise reduction technology to isolate distractions2. LED digital display, you can see the power of the headset and charging compartment at any time3. Open magnetic design, easy to pick and place headphones4, 4-mark ENC call noise reduction, clearer call, no fear of interference